Energy Flow through Ecosystems

All energy on Earth comes from

• food.

• the sun.

• chemicals.

• non-living things.

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Deep sea vent bacteria get their energy from

• eating other bacteria.

• releasing sulfur.

• photosynthesis.

• chemosynthesis.

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The 1st law of Thermodynamics

• Energy can not be created or destroyed. It just changes forms.

• Energy can only be created by the sun

• Some energy is lost to the environment.

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The efficiency of energy transfer from a lower trophic level to the next highest level is roughly

• 1%
• 10%
• 100%
• 1000%

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An organism that gets energy from breaking down dead organisms, non-living material or waste is a(an) ___________.

• producer
• consumer
• decomposer
• autotroph

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The process of plants using energy from the sun to create the first trophic level is called?

• Photosynthesis
• Chemosynthesis
• Cellular Respiratation
• Primary Producers

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Glucose/sugar and oxygen are...

• products of cell respiration

• reactants of cell respiration

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carbon dioxide and water are

• reactants of cell respiration

• products of cell respiration

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Cells do cell respiration in order to make

• water

• glucose

• energy (ATP)

• oxygen

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Why does cell respiration and photosynthesis rely on each other?

• They are the same process

• Cell respiration must occur first, then photosynthesis

• They are opposites, meaning the products of one process is needed by the other process

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